=======================================================================
MCD18A1 V6.0.0 daily L3
--------------------
MODIS HDF File Specification
Version: V6.0.0
Revision: 0
Date: 2 June 2017
ESDT: MCD18A1
Name: MODIS/Terra+Aqua Downward Shortwave Radiation Daily/3-Hour L3 Global 5km SIN Grid
Level: 3
Process ID: MCD_PR18A1
Point of Contact: Dongdong Wang
Dept. of Geographical Sciences
UMD
College Park, MD 20742
301-405-4538
ddwang@umd.edu
Sudipta Sarkar
SSAI
NASA, GSFC, Code 619
Greenbelt, MD 20771
301-614-6912
Sudipta.Sarkar@nasa.gov
=======================================================================
Product Identifier: MCD18A1
Description: Daily/3-Hourly downward shortwave Radiation 5km SIN Grid
Contents:
SDS names:
DSR
Direct
Diffuse
GMT_0000_DSR
GMT_0300_DSR
GMT_0600_DSR
GMT_0900_DSR
GMT_1200_DSR
GMT_1500_DSR
GMT_1800_DSR
GMT_2100_DSR
ViewZenithAngle
Global Metadata:
CoreMetadata.0
ArchiveMetadata.0
StructMetadata.0
HDFEOSVersion
*Start Global Attributes ===================================================
Name: Type: Num_Val: Source: Value:
CoreMetadata.0 PVL-STRING
1 TK Variable
LocalGranuleID STRING 1 PGE Variable
ProductionDateTime DATETIME1 TK Variable
DayNightFlag STRING 1 PGE Variable
ReprocessingActual STRING 1 PGE Variable
LocalVersionID STRING 1 PGE "SCF V6.0.1"
ReprocessingPlanned STRING 1 PGE Variable
ScienceQualityFlag STRING 1 DP "Not Investigated"
AutomaticQualityFlagExplanation
STRING 1 PGE "No automatic quality assessment done in the PGE"
AutomaticQualityFlag STRING 1 PGE "Passed"
ScienceQualityFlagExplanation
STRING 1 DP
ParameterName STRING 1 PGE "MCD18A1"
EquatorCrossingDate DATE 32 PGE Variable
EquatorCrossingTime TIME 32 PGE Variable
OrbitNumber INTEGER 32 PGE Variable
EquatorCrossingLongitude
DOUBLE 32 PGE Variable
VersionID INTEGER 1 MCF 1
ShortName STRING 1 MCF "MCD18A1"
InputPointer STRING 5 PGE Variable
GRingPointLongitude DOUBLE 4 PGE Variable
GRingPointLatitude DOUBLE 4 PGE Variable
GRingPointSequenceNo INTEGER 4 PGE Variable
ExclusionGRingFlag STRING 1 PGE "N"
RangeEndingDate DATE 1 PGE Variable
RangeEndingTime TIME 1 PGE Variable
RangeBeginningDate DATE 1 PGE Variable
RangeBeginningTime TIME 1 PGE Variable
PGEVersion STRING 1 PGE Variable
AssociatedSensorShortName
STRING 1 MCF "MODIS"
AssociatedPlatformShortName
STRING 1 MCF "Terra+Aqua"
AssociatedInstrumentShortname
STRING 1 MCF "MODIS"
**Product Specific Attibutues (PSA)**
AdditionalAttributeName.1 STRING 1 PGE identifier_product_doi
ParameterValue.1 STRING 1 PGE "10.5067/MODIS/MCD18A1.006"
AdditionalAttributeName.2 STRING 1 PGE identifier_product_doi_authority
ParameterValue.2 STRING 1 PGE "http://dx.doi.org"
AdditionalAttributeName.3 STRING 1 PGE HORIZONTALTILENUMBER
ParameterValue.3 INTEGER 1 PGE 0-35
AdditionalAttributeName.4 STRING 1 PGE VERTICALTILENUMBER
ParameterValue.4 INTEGER 1 PGE Variable
AdditionalAttributeName.5 STRING 1 PGE TileID
ParameterValue.5 INTEGER 1 PGE Variable
End CoreMetadata.0 _________________________________
Name: Type: Num_Val: Source: Value:
ArchiveMetadata.0 PVL-STRING 1 TK
CharacteristicBinAngularSize DOUBLE 1 PGE Variable
CharacteristicBinSize DOUBLE 1 PGE Variable
GeoAnyAbnormal STRING 1 PGE Variable
GeoEstMaxRMSError DOUBLE 1 PGE Variable
DataColumns INTEGER 1 PGE Variable
DataRows INTEGER 1 PGE Variable
GlobalGridColumns INTEGER 1 PGE Variable
GlobalGridRows INTEGER 1 PGE Variable
LongName STRING 1 MCF "MODIS/Terra+Aqua downward shortwave Radiation Daily/3-Hour L3 Global 5km SIN Grid"
ProcessingCenter STRING 1 MCF "MODAPS"
NadirDataResolution STRING 1 MCF "5km"
SPSOParameters STRING 1 PGE "none"
NorthBoundingCoordinate DOUBLE 1 PGE Variable
SouthBoundingCoordinate DOUBLE 1 PGE Variable
EastBoundingCoordinate DOUBLE 1 PGE Variable
WestBoundingCoordinate DOUBLE 1 PGE Variable
ProcessingEnvironment STRING 1 PGE Variable
DESCRevision STRING 1 MCF Variable
End ArchiveMetadata.0 _________________________________
StructMetadata.0 DFNT_CHAR8 32000
GROUP=SwathStructure
END_GROUP=SwathStructure
GROUP=GridStructure
GROUP=GRID_1
GridName="MODISRAD"
XDim=240
YDim=240
UpperLeftPointMtrs=(-18903158.834333,1111950.519667)
LowerRightMtrs=(-17791208.314667,0.000000)
Projection=GCTP_SNSOID
ProjParams=(6371007.181000,0,0,0,0,0,0,0,0,0,0,0,0)
SphereCode=0
GridOrigin=HDFE_GD_UL
GROUP=Dimension
OBJECT=Dimension_1
DimensionName="Orbit Layers"
Size=4
END_OBJECT=Dimension_1
OBJECT=Dimension_2
DimensionName="YDim"
Size=240
END_OBJECT=Dimension_2
OBJECT=Dimension_3
DimensionName="XDim"
Size=240
END_OBJECT=Dimension_3
END_GROUP=Dimension
GROUP=DataField
OBJECT=DataField_1
DataFieldName="DSR"
DataType=DFNT_FLOAT32
DimList=("Orbit Layers","YDim","XDim")
END_OBJECT=DataField_1
OBJECT=DataField_2
DataFieldName="Direct"
DataType=DFNT_FLOAT32
DimList=("Orbit Layers","YDim","XDim")
END_OBJECT=DataField_2
OBJECT=DataField_3
DataFieldName="Diffuse"
DataType=DFNT_FLOAT32
DimList=("Orbit Layers","YDim","XDim")
END_OBJECT=DataField_3
OBJECT=DataField_4
DataFieldName="GMT_0000_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_4
OBJECT=DataField_5
DataFieldName="GMT_0300_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_5
OBJECT=DataField_6
DataFieldName="GMT_0600_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_6
OBJECT=DataField_7
DataFieldName="GMT_0900_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_7
OBJECT=DataField_8
DataFieldName="GMT_1200_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_8
OBJECT=DataField_9
DataFieldName="GMT_1500_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_9
OBJECT=DataField_10
DataFieldName="GMT_1800_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_10
OBJECT=DataField_11
DataFieldName="GMT_2100_DSR"
DataType=DFNT_FLOAT32
DimList=("YDim","XDim")
END_OBJECT=DataField_11
OBJECT=DataField_12
DataFieldName="ViewZenithAngle"
DataType=DFNT_FLOAT32
DimList=("Orbit Layers","YDim","XDim")
END_OBJECT=DataField_12
END_GROUP=DataField
GROUP=MergedFields
END_GROUP=MergedFields
END_GROUP=GRID_1
END_GROUP=GridStructure
GROUP=PointStructure
END_GROUP=PointStructure
END
End StructMetadata.0 -----------------------------------
HDFEOSVersion DFNT_CHAR 1 PGE Variable
Orbit_amount DFNT_UINT32 1 PGE Variable
Orbit_time_stamp DFNT_CHAR 1 PGE Variable
*End Global Attributes
============================================================================
SDS Definitions:
SDS Name: DSR
Description: Daily instantaneous total downward shortwave Radiation for each orbit
Number Type: DFNT_FLOAT32
Rank: 3
Dimension Sizes: Variable, 240, 240
Dimension Names:
Dimension0: "Orbit Layers"
Dimension1: "Ydim"
Dimension2: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: Direct
Description: Instantaneous direct downard shortwave radiation for each orbit
Number Type: DFNT_FLOAT32
Rank: 3
Dimension Sizes: Variable, 240, 240
Dimension Names:
Dimension0: "Orbit Layers"
Dimension1: "Ydim"
Dimension2: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: Diffuse
Description: Instantaneous diffuse downward shortwave radiation for each orbit
Number Type: DFNT_FLOAT32
Rank: 3
Dimension Sizes: Variable, 240, 240
Dimension Names:
Dimension0: "Orbit Layers"
Dimension1: "Ydim"
Dimension2: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_0000_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 0000
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_0300_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 0300
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_0600_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 0600
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_0900_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 0900
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_1200_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 1200
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_1500_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 1500
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_1800_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 1800
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: GMT_2100_DSR
Description: Daily 3 hrly total downward shortwave radiation for time starting 2100
Number Type: DFNT_FLOAT32
Rank: 2
Dimension Sizes: 240, 240
Dimension Names:
Dimension0: "Ydim"
Dimension1: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "W/m2"
_FillValue DFNT_FLOAT32 1 PGE -1.0
============================================================================
SDS Definitions:
SDS Name: ViewZenithAngle
Description: Daily view zenith angles for each orbit
Number Type: DFNT_FLOAT32
Rank: 3
Dimension Sizes: Variable, 240, 240
Dimension Names:
Dimension0: "Orbit Layers"
Dimension1: "Ydim"
Dimension2: "Xdim"
SDS Attributes:
units DFNT_CHAR string length PGE "degrees"
_FillValue DFNT_FLOAT32 1 PGE -1.0